Mining machine



July 22, 1930.

M. P. HOLMES MINING MACHINE Original Filed Dec. 22, 192

diiowiy.

function similarly. It will also be noted that if it is desired to angle the machine by drawing in its receding portion, when cutting in either direction, the member 10 may be inserted at any time. v Attention is also directed to the fact that my improvement may be applied to a standard machine at small exp While I have in this application specifically'*c lescrib'ed one ram which my invert tion may assume in practice,- it will 'be understood that this embodiment is shown for purposes of illustration and that the-invention maybe modified and embodied in vari ous other forms to use in connection withv other flexible fee'dmembers than chains without departing from its spirit or the scope of the appendedclaims.

What I-claim as new and desire to secure by Letters Patent is: 1. The combination with a flexibly fed mining machine havingacontinuous flexible, feeding member presenting advancing and receding portions having free extremities, the advancing feeding portionextending laterally from-the front en dot the advance side of the machine and mechanismfor' drawing in its receding. portion, of, means. for maintaining 1ts advancing portionv of; a predetermined length during this operation. I 2. The combination with a flexibly fed mining machinehaving a continuous flexible feeding member presenting advancing. and recedingportions having. free extremities, the advancing. feeding portion extending laterally from the front end of the advance side of the machine and mechanism-for drawing in its receding portion, of means, for maintaining its advancingportionof any desired predetermined length. during-this operation. I

3. The combination with aflexib'ly fed mining machine having a continuous flexible feeding member "presenting. advancing and recedingportions having freeext'remit-ies, the advancing feeding portion extending laterally from the'front end of the advance side of the machine and mechanism for drawing in its recedinglportion during su'mpingor angling, of means removable at will for maintaining its advancing portion ofia predetermined lengthxduring'either'snm inger angling.

4: The combinationwi h a; mining machine having a continuous flexible feeding member andfprovision -fordisposing the same ad- Vance-and receding portions for" cutting in oppositedirect'ions. the advancing feeding portion extending, laterally; from thefront end of the; advance sideof the machine and meansfor drawin in the recedingportion of means for maintaining-itsadvancing' portion of a.predetermined.lengthduring this operation irrespective of the direction of out about to be made. a g 3 5. The combinationwith a-flexibly fed mining machine having a continuous flexiblefeed chain and provision for disposing the same in advance and receding portions for cutting in opposite directions the advancing feeding portion extending laterally from the front end of the advance side of the machine and means for drawing in the receding portion, of. aremovable feed chain engagingv member 1 for maintaining the advancing portion at a predetermined length during either sumping or angling and irrespective of the directionof )outto be made. a

receding portion, f and 'means; adjacent said front guide membenfor the-advancing portion for maintaining the latter of a predetermined lengthduring this operation.

7 The combination with a flexibly fed mining machine having a continuous flexiblefeeding member presentingfadvancing andreceding portions having free extremities and guidingmeans for said portions including a'guide member: for. the advancing feeding portion located at the front end of. the advance side of the machine, of mechanism for drawing in-it's recedingportion', and means including a-locking member carried on said advancing portion and engageable with saidjguide, member for limiting the length of said advancing por-: tion during this operation.

-8. In a mining; apparatus, a machine frame provided with cutting means, and feeding meanstherefor, including a continuous flexible feeding member adapted to cooperate through flexibleportions with stationary abutment means at opposite sides of'said machine frame, which portionsduringtransver'se cuttlng constitute advance and recedingportions, the ad- Vance feeding. portion extending laterally from the front end of the advance sideofthe machine, a rotatable: feed operating member mounted onsaidgmachine frame and engaging-,said-flexible feeding member and'adapted to traverse the latter during feeding of said frame, andmeans for maintaining the length of the advancing oneef saidfflex-ible portions 1neasured;betweenitscooperating stationary abutment andzsaid'frame constant while the length of theother ofxsaid: portions between its'c'oeperating ab'utmentand said feed operating member is diminished by the operation of sai-dfeed operatingmember; 1

9i The'combination with azflexibly fed mining machine having a feed operating memberand a flexible. feedingelement cooperatingtherewith, saidflexibleelementextending laterally; from the front end of the: advance sideof the-machine and a'nchored at its free end at a point inyadvance of-the'machine during feeding, of means engageable'with sai-d advance laterally extending portion of said flexible feeding element for maintaining a portion thereof betweenthe anchor and the machine of a predetermined length while said flexible element is paid out by'said feed operating member, a 1:

10. The combination with a flexibly fed mining machine having a singlefeed operatber directlyengaging said advancing portion and abutting against said guide member for preventingmovement of the advancing portion relative thereto for, limiting the length tion. t V I testimonywh'ereof I aflix mysignature.

ofsaid advancing'portion during this operaa V a MQRRISRHOLMESJ ing member and a single continuousflexiblefeeding element cooperating; therewith having advance and receding portions anchored at their free ends at points in advance and in .7

the rear of the machine, said advance feeding a portion extending laterally from the "front I end of the advance .side of the machine, of

chine and anchored at its free end at a point i in advance of the machine during feeding, of

detachable means engageable' with said advance laterally extending portion ofsaid flexible feeding element and abutting against an element of the machine for maintaining said advance portion of said flexible element between the anchor and the front end of the machine of a predetermined length While said I flexible element is paid-out by said feed operating member. a r

12. The combination with a flexibly fed mining machine having a continuous flexible feeding member presenting advance and receding portions extending in opposite direc v tionsfrom opposite ends of the machine and having free extremities, and guiding means for said portions including a rotatable guide member for said advance portion disposed at a the front end of the advance side of the Ina-- chine, and, mechanism for drawing in its receding portion, of detachable means engage able with said advancing feeding portion and abutting against said front guide member for preventing the advancin portion from mov-' ing relative to said'gui e member to maintain the advancing portion of a predetermined length during this operation. I

13. The combination with a flexibly fe mining machine having a continuous flexible feedlng member presenting advancing and re ceding portions extending in opposite directions from opposite ends, of the machine and i having rotatable guiding means for said portions including a guide member for said advancing portion disposed at the front end of the advance side of the machine, of mecha-k nism for drawing in its receding portion, and 1 means including a detachable locking mem- 

